pitrou opened a new pull request, #45740: URL: https://github.com/apache/arrow/pull/45740
### Rationale for this change Calling `hash_pivot_wider` without options is not very useful (it defaults to `key_names=[]`) but at least it shouldn't crash. ### Are these changes tested? Yes. ### Are there any user-facing changes? Just a bugfix. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org